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Tìm tập xác định hàm số y=√cosx-1 +2sinx
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Exercise 11. Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions. 131. The food price will change at the end of this month. A. The food price will be the same until the end of this month. B. The food price of this month will be equal to the one of next month. C. There will be no same food price from now till next month. D. There will be two different food prices next month. 132. All the other schools in the city are more expensive than my school. A. My school is one of the most expensive schools in the city. B. There are some more expensive schools than mine in the city. C. My school is the least expensive school in the city. D. There are some cheaper schools than my school in the city. 133. Does anyone know what this sculpture is worth today? A. Does anyone know if it is deserving to have this sculpture? B. Does anyone know whether someone should own this sculpture today? C. Does anyone know if today this sculpture is valuable or not? D. Does anyone know how much this sculpture costs today? 134. “Stop treating me that way!” she cried out. A. She warned me not to treat her that way. B. She urged me not to treat her that way. C. She begged me not to treat her that way. D. She advised me not to treat her that way. 135. She can do it because she knows the system inside out. A. She can do it because she is from inside the system. B. She can do it because the system is sometimes in and sometimes out. C. She can do it because she understands the system thoroughly. D. The confidential system enables her to do because she knows it. Exercise 12. Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions. 136. I am the youngest son in the family. I didn’t have to do much housework. A. Being the youngest son in the family, I didn’t have to do much housework. B. If I was the youngest son in the family, I wouldn t have done much housework. C. Although I am the youngest son in the family, I wouldn’t have done much housework. D. Despite the fact that I am the youngest son in the family, I did not have to do much housework. 137. We need to share the tasks. The burden on each member will be more tolerable. A. Although the burden on each member will be more tolerable, we still need to share the tasks. B. We need to share the tasks so the burden on each member will be more tolerable. C. Unless we share the tasks, the burden on each member will be more tolerable. D. It is essential to share the tasks, otherwise, the burden on each member will be more tolerable. 138. Dan saw all the paintings. He left right after. A. Dan left right after to see all the paintings. B. Dan left all the paintings after seeing them. C. Right after seeing all the paintings, Dan left. D. He left and then saw the paintings right after. 139. I usually like red. I wore black to the party last night. A. Because I usually like red, I wore black to the party last night. B. Although I usually like red. I wore black to the party last night. C. Unless I like red, I wore black to the party last night. D. As a result of my interest in red, I wore black to the party last night. 140. He tried his best. He won the biggest prize. A. If he had tried his best, he could have won the biggest prize. B. Unless he tried his best, he couldn’t win the biggest prize. C. Although he tried his best, he still won the biggest prize. D. If he hadn’t tried his best, he couldn’t have won the biggest prize.

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